Submitted on: 20 October 2001.
Revised on: 22 December 2001.
Accepted on: 17 January 2002.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
http://reply.papertrans.cn/2/170/16927/16927-12.png
Submitted on: 26 October 2015.
Revised on: 01 December 2015.
Accepted on: 14 January 2016.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
Submitted on: 05 June 2015.
Revised on: 21 August 2015.
Accepted on: 04 September 2015.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
Submitted on: 10 July 2000.
Revised on: 01 November 2000.
Accepted on: 19 December 2000.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
http://reply.papertrans.cn/2/170/16927/16927-16.png
Submitted on: 26 November 1999.
Revised on: 20 January 2000.
Accepted on: 13 February 2000.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
Submitted on: 20 August 2022.
Revised on: 01 October 2022.
Accepted on: 31 October 2022.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV
http://reply.papertrans.cn/2/170/16927/16927-19.png
Submitted on: 07 November 2008.
Revised on: 20 February 2009.
Accepted on: 25 March 2009.
___________________JOURNAL OF FORESTRY RESEARCH---NORTHEAST FORESTRY UNIV